Have to take immediate release form of Bontril PDM (phendimetrazine) multiple times a day before meals.

May not lose the amount of weight you want.

Can overdose on Bontril PDM (phendimetrazine) if you take more than directed.

There aren't many studies available on using Bontril PDM (phendimetrazine) for more than 2 weeks. Trials show that weight-loss from Bontril PDM (phendimetrazine) was only better than placebo for the first few weeks of treatment.

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Risks and Warnings for Bontril PDM (phendimetrazine)

Shouldn't take Bontril PDM (phendimetrazine) with other medicines or supplements to help you lose weight. A rare, but often fatal condition, called pulmonary hypertesion, can occur in your lungs. If you notice difficulty breathing during exercise, unexplained chest pain, fainting or swelling in your legs, let your doctor know right away. If you're planning on starting any new medicines, talk with your doctor.

Common concerns from people taking Bontril PDM (phendimetrazine)

If you have liver or kidney problems, you can still take Bontril PDM (phendimetrazine).

Weight

Shouldn't use Bontril PDM (phendimetrazine) longer than necessary. Make sure you're keeping track of your weight loss and make regular appointments with your doctors. Don't take more than what's directed or serious side effects may develop.